Man has the possibility of existence after death. But possibility is one thing and the realization of the possibility is quite a different thing.
All science requires mathematics. The knowledge of mathematical things is almost innate in us. This is the easiest of sciences, a fact which is obvious in that no one's brain rejects it; for laymen and people who are utterly illiterate know how to count and reckon.
A community is a group of people who have come together, and they work and they live to try and improve the standard of living and quality of life - and I don't mean money.